Keep Your Leisure Battery Ready for the Next Stop

A 12V split charge relay helps manage charging between a starter battery and a leisure battery in a compatible dual-battery system. Put the drive to work replenishing your auxiliary battery, then let voltage-sensing isolation separate the batteries when charging voltage falls.

Practical Dual-Battery Charging

• Voltage-sensing operation: The relay responds to charging-system voltage, automatically linking and separating the battery circuits as operating conditions change.
• Starter-battery separation: Isolation helps prevent leisure-battery loads from drawing through the linked circuit when the relay disconnects.
• Cable-length choices: Listed 3m, 5m and 7m selections offer options for different wiring layouts.
• LED options: Choose an LED-labelled selection when you want the version offered with an indicator.
• Single-piece selections: The 1pc and 1pc with LED options provide alternatives to the cable-length selections.

For a campervan, motorhome, mobile workshop or compatible boat installation, a dedicated split-charge arrangement helps organize the relationship between starting power and auxiliary battery use. Select the configuration suited to your battery system and installation layout.

Select Your Relay Configuration

The available options are 3m, 5m, 7m, 3m with LED, 5m with LED, 7m with LED, 1pc and 1pc with LED. Package contents depend on the selected configuration. The detailed 3m kit information retained below describes that package rather than every option.

Frequently Asked Questions

What does a split charge relay do?

It connects compatible starter and auxiliary battery circuits when charging voltage reaches its operating threshold, then separates them when voltage falls.

Is this for a 12V battery system?

Yes, this listing is for a 12V split-charge relay. The relay, battery chemistry and charging system must be compatible with the installation.

Which cable-length options are listed?

The selections include 3m, 5m and 7m configurations, each also offered in an LED-labelled version.

Does every selection include cables?

No. Single-piece options are listed separately from the cable-length configurations. The contents correspond to the option selected.

Can it be used with a smart alternator?

Compatibility depends on the alternator's charging behavior and the batteries used. A voltage-sensing relay is not a DC-to-DC charger; use the charging equipment specified for your vehicle and battery system.

SPECIFICATIONS

Brand Name: NONE

High-concerned chemical: none

Material: =

Model Number: =

OEM NO.: =

Origin: Mainland China

3mtr 12v Ready Made Split Charge Relay Kit with 140amp Intelligent Voltage Sense Relay

Applications:
This type of kit is suitable for Camper Vans, Motor homes, 4x4s, Day Vans, Mobile workshops,Cars or Boats.

Voltage sense systems are especially suited for modern vehicles with canbus controlled wiring as this type of kit does not need an ignition feed or any additional wiring and are very simple kit to install, all you need to do is to connect your starter battery to your leisure battery(s) by using the kit supplied, with very easy to understand fitting instructions and a wiring diagram.

The voltage sense relay simply detects the rise in voltage from you vehicles charging system to allow you to charge your leisure battery(s) while your engine is running. When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery. So it does not drain your main starter battery and you will always be able to start your vehicle.

The kit includes comes pre-assembled with terminals:

• 12v 140amp Intelligent Voltage sense Split Charge Relay

• 2 x 250mm red 70amp cable from Battery to fuse holder leads(Lead terminals pre-crimped)

• 1 x 500mm red 70amp cable Relay to fuse holder lead(Lead terminals pre-crimped)

• 1 x 2 metre 70amp Relay to fuse holder lead(Lead terminals pre-crimped)

• 1 metre 70amp of Black earth cable(Lead terminals pre-crimped)

• 1 Pair 8mm Post Type Battery Terminals

• 2 x MTA MIDI Fuse holders

• 4 x 60A MTA MIDI Fuses including 2 spares.

• Red&Black Heat shrink to protect all the connections.

• 10 x Cable ties

• 10 x adhesive cable tie fixings base to keep everything tidy.

• 15 x fixing screws

• Easy to understand Fitting Instructions + after sales support if required

Please note: The 3 mtrs of Red cable supplied in this kit are made up of the 4 separate leads which is pre-assembled with terminals as described above.

Packing list

Package Includes: (You will be supplied with everything you need to fit this kit)

12v 140amp Intelligent Voltage sense Split Charge Relay
3mtrs 10mm² Red PVC 70A@12V Power Cable
1mtr 10mm² Black PVC 70A@12V Earth Cable
1 Pair 8mm Post Type Battery Terminals
2 x MTA MIDI Fuse holders
4 x 60A MTA MIDI Fuses including 2 spares.
10 x Cable Crimps Terminals Connectors .
Heat shrink to protect all the connections.
10 x Cable ties
10 x adhesive cable tie fixings base to keep everything tidy.
10 x fixing screws
Easy to understand Fitting Instructions + after sales support if required